Solar power supply device, power emergency draw-bar box and power supply system

A power emergency draw-bar box, comprising a solar power supply device, a draw-bar and a wheel, wherein the solar power supply device comprises:

• a main body comprising a plurality of side walls enclosing a storage cavity;
• a foldable solar power generation assembly;
• an electric energy output device electrically connected with the solar power generation assembly and configured to output electric energy converted by the solar power generation assembly;
• wherein the solar power generation assembly is movably connected with a first side wall of the plurality of side walls and is configured to be stored in the storage cavity in a folded state and unfolded outside the storage cavity in an unfolded state;
• the draw-bar is configured to push and pull the main body, and the wheel is installed at a bottom end of the main body.

A power supply system comprising a plurality of solar power supply devices, wherein the solar power supply device comprises:

• a main body comprising a plurality of side walls enclosing a storage cavity;
• a foldable solar power generation assembly;
• an electric energy output device electrically connected with the solar power generation assembly and configured to output electric energy converted by the solar power generation assembly;
• wherein the solar power generation assembly is movably connected with a first side wall of the plurality of side walls and is configured to be stored in the storage cavity in a folded state and unfolded outside the storage cavity in an unfolded state;
• wherein two opposite side walls of the main body are respectively provided with an electrical connector male part and an electrical connector female part to realize electrical connection between different solar power supply devices, and the electrical connector male part and the electrical connector female part are both electrically connected with the solar power generation assembly or the electric energy output device;
• and
• wherein the plurality of solar power supply devices are electrically connected with each other by matching the electrical connector male part and the electrical connector female part.